#include <iostream>

int fun()
{
    std::cout << "hello" << std::endl;
    return 0;
}

int main(int argc, char const *argv[])
{
    //std::cout << "hello c++" << std::endl;

    int num = 100;

    fun();

    std::cout << "num = " << num << std::endl;
    return 0;
}
